W83193R Winbond Electronics Corp America, W83193R Datasheet - Page 4

• Manufacturer Part Number: W83193R
• Description: Description = 83.3MHz/100MHz Intel Lx/ex Clock Gen. ;; Package = Ssop 48
• Manufacturer: Winbond Electronics Corp America

5.0 PIN DESCRIPTION
IN - Input
OUT - Output
I/O - Bi-directional Pin
# - Active Low
* - Internal 250kΩ pull-up
5.1 Crystal I/O
Xin
Xout
5.2 CPU, SDRAM, PCI Clock Outputs
CPUCLK [ 0:3 ]
IOAPIC
SDRAM [ 0:11]
PCICLK_F/ *FS1
PCICLK 0 / *FS2
PCICLK [ 1:4 ]
PCICLK5/ PCI_STOP#
SYMBOL
SYMBOL
17,18,20,21,28
,29,31,32,34,
40,41,43,44
10,11,12,13
35,37,38
- 4 -
PIN
PIN
47
15
4
5
7
8
OUT
OUT
OUT
OUT
I/O
I/O
I/O
I/O
I/O
IN
O
Crystal input with internal loading capacitors and
feedback resistors.
Crystal output at 14.318MHz nominally.
Low skew (< 250ps) clock outputs for host
frequencies such as CPU, Chipset and Cache.
Vddq2 is the supply voltage for these outputs.
High drive buffered output of the crystal, and is
powered by VDDq2.
SDRAM clock outputs which have the same
frequency as CPU clocks.
Latched input for FS1 at initial power up for H/W
selecting the output frequency of CPU, SDRAM and
PCI clocks.
Free running PCI clock during normal operation.
Latched input for FS2 at initial power up for H/W
selecting the output frequency of CPU, SDRAM and
PCI clocks.
PCI clock during normal operation.
Low skew (< 250ps) PCI clock outputs.
Internal 250kΩ pull-up.
If MODE = 1 (default), then this pin is a PCI5 clock
output. If MODE = 0 , then this pin is PCI_STOP #
and used in power management mode for
synchronously stopping the all PCI clocks.
Publication Release Date: Nov. 1998
FUNCTION
FUNCTION
Revision 1.0